I do a POST request using Jmeter and I parse the JSON response using the JSON extractor. When i use the debug sampler I could see the Variable is assigned with the value properly but that value goes as null in the subsequent request
Below is the request URL for the next sample /XXX/XXX/XXX/XX/${recordingjobid}
but this value recordingjobid is not substituted with the value.
I can only think of not proper placement of the JSON Extractor.
For example if you have it at the same level as several samplers - it will be run after every of them (including the Debug Sampler) and each next one will be overwriting the value set by the previous one as JMeter Variables are local to the thread and don't allow duplicates.
So my expectation is that if you move the JSON Extractor to be a child of the request which returns the JSON - it should resolve your issue.
More information: JMeter Scoping Rules - The Ultimate Guide
Related
In my first request I am able to extract the value using Regular Expression Extractor which is clearly visible into the debug sampler. The value is extracted by setting the following options in Regular Expression Extractor:-
Name of Created Variable:- instanceUID
Regular Expression:- "InstanceUid":"(.*?)"
Template:-$1$
Match No:-1
Default Value:- (Blank)
The value that I want to pass in the next POST request is visible as:-
instanceUID_g1=2ab5dfb8-a217-4ff2-9025-523565b7b7ad
And the body for the next HTTP POST request is set like this:-
${"iInfo":{"InstanceUid":"${instanceUID_g1}","Registry":"${Registry}"}}
When this request seen in detail inside View Results Tree looks like:-
${"iInfo":{"InstanceUid":"${instanceUID_g1}","Registry":"AAX"}}
As seen the value of ${instanceUID_g1} did not get substituted in the POST body as was for variable ${Registry} which was taken from CSV config.
Being new to Jmeter can anyone suggest what did I miss?
Most probably your Regular Expression Extractor placement is not very correct, be informed about JMeter Scoping Rules concept
If you place Regular Expression Extractor as a child of the request - it will be applied to this request only
If you place Regular Expression Extractor at the same level as several requests - it will be applied to all of them
in the latter case it will be applied 1st to 1st sampler, then to Debug Sampler, then to 3rd sampler so on 2nd step it will be overwritten, most probably that's your problem
Also it appears that you're getting the data from JSON so it makes more sense to use JSON Extractor or JMESPath Extractor
Im running a test plan containing 10 requests i need to get the variable value from 3rd response json to be passed to request URL of 10 th request passed . any way we can use json extractor to do this?
This can be accomplished by using any of the post processors for correlation in amongst any of the requests. I have shown an example below with JSON Extractor
Request Sample
The value that I am going to extract from 3rd request's response is "I am the value to be fetched from 3rd response"
JSON Extractor
I am using the below syntax in JSON Path Expression to extract data from "valueToBeFetched" json object and storing it in variable named "extractedValue_C"
$..valueToBeFetched
10th Request
Replacing the extracted value with syntax ${extractedValue_C} in 10th request
Output
Response Captured from 3rd Response
Captured value passed in 10th request
Hope this helps!
JSON Extractor obeys JMeter Scoping Rules so if you put it as a child of the 3rd request - it will be applied to 3rd request only.
If you come up with a valid JSONPath matching the value you want to extract - the value will be saved into a JMeter Variable which can be used anywhere after 3rd request (where it is defined or overwritten in next iteration)
I use JMeter 4, I have a problem in a JMeter JSON Path Extractor.
I have done an HTTP Request (POST) to a service that I wan't to test.
Response data from the service is
{"rid":"661ff2d7-12e8-e811-8110-00215a9b9851",
"participation":{"rid":"ed8cfced-0063-4fda-92fd-b23f50197797"}}
I wan't to extract the first GUID witch is allocated to the first rid.
As JSONPath Expression I have used $.rid and wan't to assign that value to a JMeter variable. Therefore I have checked the radio button JMeter variable and entered my JMeter variable which is int_rid.
When I execute my JMeter testplan the int_rid variable will be null.
In JSON Extractor If you check the radio button JMeter variable it expect to search inside the contents of JMeter variable, which you don't want, usually Main sample only is enough
Main sample only - only applies to the main sample
Sub-samples only - only applies to the sub-samples
Main sample and sub-samples - applies to both.
JMeter Variable Name to use - assertion is to be applied to the contents of the named variable
Put int_rid in Names of created variables field and chose Match No. 1 to find the first value
My task is to make a request and save some data from the headers in a variable and use it later in another requests.
So I've added an http request and added an regular expression extractor. Here is my setup:
And then I've created another request and I'm using the LocationToken variable, but there the variable has the default value (dd). here is the response:
So, as you can see, the pattern patches on the headers. So what have I done wrong?
In Regular Expression Extractor, under Apply to section, you should select Main sampler and sub-samplers option but not JMeter Variable.
Regular Expression Extractor saves the value into the variable which we specified in Reference Name field.
in the question,
Reference Name: LocationToken
in later request, you refer the value as follows:
${LocationToken}
I want to manipulate the request body of HTTP thread based on the data extracted (using 'Regular Expression Extractor') from the previous HTTP response.
Here is the scenario:-
I have extracted the statusFlag and statusId from 'HTTP request 1' as:
Ref name: status
Reg. Exp: "statusFlag":"(\w+)","statusId":"(\w+)"
So, first I want to check that the value of statusFlag is 'New' or not.
If it is New then I have to proceed and feed statusId in next HTTP request or else display statusFlag mismatch.
Need help. Got stuck badly.
I believe Response Assertion is what you're looking for. Add it after the Regular Expression Extractor and configure it as follows:
Apply to: JMeter Variable -> statusFlag (or your reference name)
Pattern Matching Rules: Equals
Add New as a "Pattern to Test"
The assertion will check whether "statusFlag" is "New" and if not - it will fail the sampler and report the expected and the actual value.
Optionally you can add If Controller after the Response Assertion, use ${JMeterThread.last_sample_ok} as a condition and place 2nd request as a child of the If Controller - it will be executed only if "statusFlag" is new.
See How to Use JMeter Assertions in Three Easy Steps guide for more information on conditionally setting pass or fail criteria to requests in your JMeter test.
That's how your Jmeter project should look like.
Regular Expression Extractor stores extracted value in ct variable that can be accessed in If Controller as "${ct}" == "yourvalue" and, if true, can be also sent as a part of Request 2 body using the same ${ct} reference.
Jmeter project structure